771056 has 40 divisors (see below), whose sum is σ = 1760304. Its totient is φ = 322560.

The previous prime is 771049. The next prime is 771073. The reversal of 771056 is 650177.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2120 + ... + 2456.

2⁷⁷¹⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 771056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (880152).

771056 is an abundant number, since it is smaller than the sum of its proper divisors (989248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

771056 is a wasteful number, since it uses less digits than its factorization.

771056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 771056 is about 878.0979444231. The cubic root of 771056 is about 91.6984455473.

The spelling of 771056 in words is "seven hundred seventy-one thousand, fifty-six".